5 results about "Free radical oxidation" patented technology

This invention relates to the field of graphene materials technology, and discloses a modified graphene material and its preparation method. The preparation method includes: modifying graphene oxide with sodium lignosulfonate through π-π stacking to prepare an aqueous stable dispersion; introducing saponified rosin acid to attach the rosin acid tricyclic hydrophobic framework to the graphene surface; compounding tung oil emulsion, utilizing the α-tung acid conjugated triene double bond to form a film through free radical oxidation polymerization at room temperature (15-35℃), and covalently bonding graphene into the organic film-forming system through phenolic radical coupling; adding zinc borate, where zinc ions catalyze curing and promote the formation of zinc rosin acid, and borate ions form an inorganic borate ester crosslinking network with the hydroxyl groups of sodium lignosulfonate; adjusting the solid content and grinding to obtain the finished product. The conductive ink prepared by this invention self-cures at room temperature, and the cured coating has excellent water resistance and conductivity stability, making it suitable for heat-sensitive flexible substrates.

The application discloses a slow-release biochar-based compound fertilizer and a production process thereof, and belongs to the technical field of biochar-based fertilizers.The compound fertilizer comprises, in terms of weight parts, modified biochar 30-45 parts, inorganic nutrient raw material 50-65 parts, composite cross-linking binder 4-10 parts and chelated trace elements 1-3 parts;the production process comprises, in sequence, biochar micropore cleaning and activation, free radical oxidation modification, surface grafting polymerization, vacuum impregnation loading and cross-linking embedding granulation;the application increases oxygen-containing functional groups on the surface of biochar and constructs hierarchical pore structures through an oxalic acid-assisted catalytic free radical oxidation system and a maleic anhydride-itaconic acid double monomer grafting technology;through modification of biochar and in combination with a vacuum loading process, nutrients are locked inside the hierarchical pores, and then, a moisture-responsive binder coating is supplemented, so that double synergistic slow release of nutrients is realized, the problems of loose nutrient loading, easy loss and short slow-release period of existing carbon-based fertilizers are solved, and the application is especially suitable for saline-alkali soil improvement and dry farming.

The application discloses a kind of combustion flue gas collaborative purification system and method.System includes combustion equipment ontology, high-temperature reaction section, NO2 adding device, low-temperature oxidation section and pollutant removal device.High-temperature reaction section makes flue gas stay at 850-1100 DEG C for ≥3 seconds, NO2 is fully dissociated to generate free radical, and free radical oxidizes NO, CO, VOCs and part of SO2 in flue gas;Low-temperature oxidation section makes flue gas to 200 DEG C before stay for ≥2 seconds, makes residual NO be converted into NO2 by thermal oxidation to supplement chain cycle, and promotes SO2 to be oxidized into SO3.The application meets the reaction condition of free radical oxidation and thermal oxidation respectively, significantly improves the efficiency of multi-pollutant collaborative purification, and is suitable for coal-fired power plant, gas turbine, coking furnace and other combustion equipment.

The application relates to a preparation method and application of a self-microporous non-fluoride ion polymer and an ion exchange membrane, relates to the field of high polymer structure design, and the self-microporous non-fluoride ion polymer is characterized in that the polymer and the membrane have a structure of formula (1): wherein x and y are molar percentages of sulfonated structure units and other functionalized structure units in total units, x=25% to 95%, y=75% to 5%; R is any one or two structures as follows: due to the existence of rigid and twisted monomers in the polymer, and the fact that the polymer main chain does not contain fluorine groups and ether bonds and other sites vulnerable to free radical attack, the self-microporous non-fluoride ion polymer has high ion selectivity, excellent ion transmission capacity and strong anti-free radical oxidation stability, and has wide application prospects in the field of electrochemical energy storage.

The application discloses a kind of water body pollutant degradation methods based on colloidal calcium peroxide, the water body pollutant degradation methods based on colloidal calcium peroxide include the following steps: colloidal calcium peroxide is mixed with the water body to be treated containing pollutant, forms mixed water body, and the pollutant is degraded by reaction.This application utilizes homogeneous nucleation method to prepare colloidal calcium peroxide, then utilizes colloidal calcium peroxide in water body by the active site of surface calcium ion and combines with pollutant, and utilizes direct electron transfer of its surface peroxide group, realizes the efficient oxidative degradation to various refractory pollutants.This application colloidal calcium peroxide degradation pollutant mechanism is mainly dominated by non-radical effect, avoids the problem that traditional free radical oxidation path is easily interfered by water body matrix, can keep efficient degradation performance in wide pH range, has good anti-interference ability.